The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7530 hours. The population standard deviation is 980 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,292 hours. a. At the 0.05 level of significance, is there evidence that the mean life is different from 7530 hours? b. Compute the p-value and interpret its meaning. c. Construct a 95% confidence interval estimate of the population mean life of the light bulbs. d. Compare the results of (a) and (c). What conclusions do you reach? e. Compare the results of parts (a) through (d) to those when the standard deviation is 700 hours. a. Let u be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H,.. 7530 7530 Ho: H₁ CHE What is the test statistic? ZSTAT (Round to two decimal places as needed.)

Q: Find || projau || if u = (2,4) and a = = (3,-1). NOTE: Enter the exact answer or round the exact…

A: projau=u.aa2a   For two vectors u=u1,u2 and a=a1,a2a.u=a1×u1+a2×u2   For any vector x=x1,x2x=x12+x22…

Q: 15x4 d.x 5 -3

A:

Q: A. Two golfing venues offer bays that customers con reserve to play various golf ing games. The…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: B 4a X A 66° 20

A: The given figure is -  We have to find the value of 'x'.

Q: How do you find those 3 values shown in the pictures? and what are they represented?

A: The circumference of a circle is bounded by the perimeter of an inscribed polygon of sides 12 and…

Q: Learning Target 1: Patterns and Units. I can find patterns in nature and use them to predict future…

A:

Q: I need help with f-h

A:

Q: p value is incorrect. please fix that!

A: Take t value from above given data t = 0.6004 df = 57.7 ~ 58

Q: This is grade 12 calculus the planes and lines unit, please write it on paper neatly. Double check…

A: Solution:

Q: dx -5 V4 x

A:

Q: 7. True or False? 2 A, E,I3 C E A, I, ES a. True 6. False

A:

Q: Can this question be redone? No handwriting please, I cannot understand the solution provided. Thank…

A: Yes

Q: Find the distance between (6, -6.9, 5.5) and (-4, 6.2, 3.1). Give your answer rounded to two decimal…

A:

Q: Find the value of AC

A: Step 1:Understand Similarity and RatiosTriangle ABD is similar to triangle ABC. Hence, the ratio of…

Q: 5) x + 2 :+2 Find de Also, show a check.

A: Topic: integration

Q: an you please write this on paper as i requested in the question? It helps me undertand better thank

A: This is the question from LinearTransformation.

Q: Let x=2, w=-1, z=-3. Evaluate the given capital letter. X=(x^2z-w)^2z / zw^2

A:

Q: center (3,-5) radius 5

A: given center=(3,-5)  and radius=5 ,we have to find the equation of circle.

Q: Evaluate 2y dy

A: In some cases an integral can be converted to a standard integral using an appropriate substitution.…

Q: The center of an ellipse is (1,6). One focus of the ellipse is (-1,6). One vertex of the ellipse is…

A:

Q: QUESTION 3 Solve the problem. Round to the nearest hundredth, if necessary. Assume that the mean…

A: Let , X = denotes the length of human pregnancies

Q: Can you show me how you drawn that and how you got your numb

A: For the give differential equation, check the slope at different points and draw the lines with the…

Q: What’s the value of micro

A:

Q: whats the coordinates of the image of the point (-2,5) after a dilation D4

A: Please see the below answer.

Q: sorry can u break this down?  this is hard to read

A: We need to compute the given limit.      limx→π+cotx

Q: Differentiate.

A: Given,  y = √arctan x To differentiate the function.

Q: Solve by Crammer Rule

A:

Q: the distance between (-3/5, -4) and (-3/5, 2/3)

A: The given points are (x1, y1) = (-3/5, -4) and (x2, y2) = (-3/5, 2/3).

Q: State 2 pieces of information that you have learned about dilation in math.

A: Explanation of the answer is as follows